Purpose - To determinehow bones move.
Materialschicken foot(ask a butcher for this) needle-nose pliers adult helper
CAUTION: Wash your hands after touchingraw chicken. It may contain harmful bacteria.
¦ Ask an adulthelper to cut away the skin around the end of the chicken foot to expose thewhite, stringlike tendons.
¦ Use the pliersto pull the tendons one at a time.
ResultsThe toes bendand extend.
Why? Tendons (strongbands of tissue that attach muscle to bone) are attached to both the outer andunderside of the toe. When a tendon connected to the underside is pulled, thetoe bends. Pulling a tendon on the outer side causes the toe to extend.